<style>
  .none {
    text-decoration: none;
  }
  .underline {
    text-decoration: underline;
  }
  .overline {
    text-decoration: overline;
  }
  .line-through {
    text-decoration: line-through;
  }
</style>

<p class="none">hello world</p>
<p class="underline">hello world</p>
<p class="overline">hello world</p>
<p class="line-through">hello world</p>
